A quick search does not show a Pharmvet Labs. There is a Vet Pharm, Inc. which carries several forms of anabolic steriods with their MSDS sheets. No listings of products called Testabol.
A standard web search shows this "product" mentioned primarily by body builders.
If you have a question about a particular product, you should not administer it to your animal. You can report your suspicions to the FDA (www dot fda dot gov) and they will investigate.